Executive Summary

Title Electronic Arts SnoopyCtrl ActiveX control and plug-in stack buffer overflows
Name VU#179281 First vendor Publication 2007-10-08
Vendor VU-CERT Last vendor Modification 2007-10-09
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Vulnerability Note VU#179281

Electronic Arts SnoopyCtrl ActiveX control and plug-in stack buffer overflows


The Electronic Arts SnoopyCtrl ActiveX control and plug-in contains multiple stack buffer overflows, which could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Electronic Arts (EA.com) provides an ActiveX control and Netscape-style plug-in called SnoopyCtrl. This control, provided by NPSnpy.dll, is included with an EA.com update package. The SnoopyCtrl ActiveX control and plug-in contains buffer overflow vulnerabilities in multiple methods and initialization parameters.

II. Impact

By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), a remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user on a vulnerable system.

III. Solution

We are currently unaware of a practical solution to this problem. Please consider the following workarounds

Disable the SnoopyCtrl ActiveX control in Internet Explorer

The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID:

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:
    Windows Registry Editor Version 5.00

    [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{525A15D0-4938-11D4-94C7-0050DA20189B}]
    "Compatibility Flags"=dword:00000400
Disable the SnoopyCtrl plug-in in other browsers

The SnoopyCtrl plug-in can be disabled in other browsers, such as Firefox, by removing the NPSnpy.dll file from the plugins directory.

Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document.

Disable plug-ins

Disabling plug-ins by default can prevent exploitation of this and other plug-in vulnerabilities. This can be accomplished by configuring NoScript to Forbid other plugins for untrusted sites.

Systems Affected

VendorStatusDate Updated
Electronic ArtsVulnerable25-Aug-2007




This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

Date Public10/08/2007
Date First Published10/08/2007 05:53:51 PM
Date Last Updated10/09/2007
CERT Advisory 
CVE NameCVE-2007-4466
Document Revision13

Original Source

Url : http://www.kb.cert.org/vuls/id/179281

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
50 % CWE-94 Failure to Control Generation of Code ('Code Injection')

CPE : Common Platform Enumeration

Application 1

Open Source Vulnerability Database (OSVDB)

Id Description
37723 SnoopyCtrl ActiveX (NPSnpy.dll) Unspecified Method Arbitrary Code Execution